Real Money Trade: The problem is that it’s hard to define what qualifies as “real money” versus “game money” when the Mythic Stars MMO alone has an internal economy bigger than some respectably-sized planets.
The logical consequences of this apply in full, including the follow-up to the city guards dragging your character in for stealing someone’s gold (if done outwith the parameters of the game by cheating means, etc. – obviously game theft is fair, um, game) being the game looking up your physical identity and having the local constabulary drag you off for an unsympathetic judge to explain grand theft to you in a prolonged and inconvenient manner.